论文标题
量子控制通过ther鼠连贯的反stokes拉曼光谱法
Quantum control via chirped coherent anti-Stokes Raman spectroscopy
论文作者
论文摘要
提出了一种适用于相干抗螺旋式拉曼散射光谱的chireped-Pulse量子控制方案，称为C-CARS，旨在最大化分子中的振动相干性。它意味着在汽车，泵，stokes和探针的四波混合过程中嘲笑三个传入的脉冲，以满足绝热通道的条件。该方案是在旋转波近似和绝热消除激发态歧管的框架中得出的，将四级模型系统简化为``超高效''两个级别系统。该方法的鲁棒性，光谱选择性和绝热性有助于改善用于传感，成像和检测的汽车光谱法的现有方法。我们还表明，可以通过仔细选择脉冲的光谱chirp速率来控制自由度振动程度的激发的选择性。
A chirped-pulse quantum control scheme applicable to Coherent Anti-Stokes Raman Scattering spectroscopy, named as C-CARS, is presented aimed at maximizing the vibrational coherence in molecules. It implies chirping of three incoming pulses in the four-wave mixing process of CARS, the pump, the Stokes and the probe, to fulfil the conditions of adiabatic passage. The scheme is derived in the framework of rotating wave approximation and adiabatic elimination of excited state manifold simplifying the four-level model system into a ``super-effective'' two level system. The robustness, spectral selectivity and adiabatic nature of this method are helpful in improving the existing methods of CARS spectroscopy for sensing, imaging and detection. We also show that the selectivity of excitation of vibrational degrees of freedom can be controlled by carefully choosing the spectral chirp rate of the pulses.
